<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style type="text/css">
        h3{
            color: green;
        }
        #tx img{
            border-radius: 50%;
        }
        #one{
            width: 200px;
            height: 50px;
            background: blue;
            border-radius: 20px;
        }
        #two{
            width: 200px;
            height: 50px;
            background:yellow;
            border-radius: 0 20px 20px 0;
        }
        #three{
            text-align: center;
            width: 100px;
            height: 30px;
            border: 10px solid red;
            border-image-source: url("img/border_image_button.png");
            border-image-slice:0 14 0 14;
            border-image-repeat: round;
        }
        #four{
            width: 300px;
            height: 200px;
            background-color:forestgreen;
            box-shadow: 15px 15px 5px gray;
        }
    </style>
</head>
<body>
    <h3>圆形</h3>
    <div id="tx"><img src="img/tx.jpg" alt="猴子"/></div>
    <h3>圆角</h3>
    <div id="one"></div>
    <h3>右上角，右下角圆角&&左上角，左下角直角</h3>
    <div id="two"></div>
    <h3>边框背景</h3>
    <div id="three">边框背景</div>
    <h3>盒子阴影</h3>
    <div id="four">盒子阴影</div>
    <br/> <br/>
</body>
</html>